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Finding the Fourth Proportional to 18,634.68, 25,715.88 and 10,251

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Solution

The fourth proportional to 18,634.68, 25,715.88 and 10,251 is: 14,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.68 : 25,715.88 = 10,251 : x
  2. Step 2: Convert to fraction form
    18,634.68/25,715.88 = 10,251/x
  3. Step 3: Cross multiply
    18,634.68x = 25,715.88 × 10,251
  4. Step 4: Simplify right side
    18,634.68x = 263,613,485.88
  5. Step 5: Solve for x
    x = 263,613,485.88/18,634.68
  6. Step 6: Final answer
    x = 14,146.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.